<!DOCTYPE html>
<html lang="zh-CN">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        div {
            width: 100px;
            height: 90px;
            background-color: #128a30;
        }

        div {
            margin-top: 10px;
            margin-left: 5px;
            margin-right: 8px;
            margin-bottom: 15px;
        }

        /* 复合模式，与padding一样 */
        div {
            /* margin: 20px; */

            /* 上下10  左右15 */
            margin: 10px 15px;
        }
    </style>
</head>

<body>
    <div>wowo</div>
    <div>menmen</div>
</body>
】

</html>